It’s no secret that Mark Cuban is not a fan of Donald Trump. He has heavily criticized him in the past, and has made it known that he is not supporting him or his presidency. However, the commander-in-chief’s camp has recently fired back at Dallas Mavericks owner, as Donald Trump Jr. Recently trolled him with his idea of running for president.

After news came out that Cuban is “heavily considering” running for office, the president’s oldest son took to his Twitter account, where he retweeted a post made by BuzzFeed. He then captioned it by saying that the 59-year-old billionaire is only looking for attention with his latest announcement.

Cuban has not been shy in speaking his mind, and has often retaliated against his critics. That said, it did not come as a complete surprise that he responded immediately to Trump Jr., which could mark the start of a fiery back-and-forth between both parties. He certainly did not appreciate the zing he received and replied to the tweet right away.

https://twitter.com/mcuban/status/928701272353591296?ref_src=twsrc%5Etfw&ref_url=https%3A%2F%2Fwww.washingtonpost.com%2Fnews%2Fearly-lead%2Fwp%2F2017%2F11%2F09%2Fdonald-trump-jr-zings-mark-cuban-on-twitter-over-prospective-presidential-run%2F

This exchange could very well prompt Cuban to pursue his plans to become the next president. For now it’s anybody’s guess what his exact plans will be, but with the next elections three years away, the final decision from him could be made sooner than later.